Hipsterkid BPA Free, Warranty Protected, Polarized Sunglasses for Babies, Ages 3-6, in Wood from the Golds Collection SAFETY FIRST: These specs are designed specifically with delicate eyes in mind. Polarized for 100% UVA and UVB protection, sturdy yet flexible frames, shatter-resistant lenses, and every pair comes with a stay-on strap. NONTOXIC: Hipsterkid sunglasses maintain your child's health and style at the same time! Built from entirely nontoxic materials, each pair is BPA free, as well as Phthalate and PVC free. Their design complies with FDA, CPSIA, and CE standards. SIZE IT UP: Please check the size chart before purchasing, as sizing tends to run small. EASY REPLACEMENT: Kids will be kids, right? That's the fun part! And that's the reason why every pair of Hipsterkid sunglasses comes warranty- guaranteed. Break 'em, drop 'em, lose 'em it doesn't matter! Replaceable glasses must have been purchased within the past year and be registered on the FCTRY website. GOLD STANDARD: Hipsterkid's Gold collection is the step above. If you want your child to be trendsetting day one, give them any outfit's crown jewel stylin' shades an adult would want. 10mm =  inch 38mm = 1  inches 43mm = 1  inches 110mm = 4  inches 120mm = 4  inches Strap to keep glasses on and prevent loss Flexible frames that resist twisting and tension Shatter resistant lenses to guard against breakage